code: def test_predicate_arr_first_6573() -> None:
      df = pl.DataFrame(
          {
              "a": [1, 2, 3, 4, 5, 6],
              "b": [6, 5, 4, 3, 2, 1],
          }
      )
  
      assert (
          df.lazy()
          .with_columns(pl.col("a").implode())
          .with_columns(pl.col("a").list.first())
          .filter(pl.col("a") == pl.col("b"))
          .collect()
      ).to_dict(as_series=False) == {"a": [1], "b": [1]}
  
imports: from datetime import date, datetime, timedelta
  from typing import Any
  import numpy
  import pytest
  import polars
  from polars.testing import assert_frame_equal
  from polars.testing.asserts.series import assert_series_equal
label_desc: Use image node_id 4 for calling a global function with example usage: test_predicate_arr_first_6573() without return types